Document 1-0479-013 Rev B
34
Diagram (C) shows a link with two repeaters between the master and slave. With two repeaters
there is clearly more flexibility in getting around obstacles and greater total range is possible. Once
again, it would be desirable to use external omnidirectional antennas with the repeaters, and
attaching a Yagi to the master and slave would increase the range of the link.
When two repeaters are used there is no further degradation in the RF speed of the link.
In example (D) a setup is shown where a master routinely calls a number of slaves at different times.
The master is communicating with a transceiver designated as a slave/repeater which is connected
to a remote instrument in the field. Since this instrument is placed in an elevated location, the
transceiver may also be used as a repeater when it is not used as a slave. At any time desirable the
master may call any of the slaves, establish a connection, and retrieve and send data.